I know the Zoo Med lights are good but our set up is a pre-made system provided to us by corporate. We can't change the fixtures to allow the Zoo Med bulbs. But it doesn't appear to me or even one of the leads that these lights provide UVB. The little dragon we have right now has mobility issues with her legs right now. She will sit on them or not straighten them if she lays on them funny. She gets around okay and eats just fine. She's growing. But the limb issue worries me.